Building air really slowly

lostagain · January 12, 2015, 07:42:23 AM

Was working fine. On way to town last night, pressure below 90psi and dropping. -18C,0F outside. On fast idle, was rising very slowly. At 125 psi cutout, dryer purges normally. No leaks. All air systems like brakes working as they should. I am thinking bad compressor. Will check intake filter and discharge line after coffee. -24 C this morning!

JC

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Stormcloud · January 12, 2015, 07:46:40 AM

Maybe the air dryer cartridge needs to be replaced?

-24C? Brrrr....hurry down here!!

luvrbus · January 12, 2015, 07:51:52 AM

I wouldn't work in -11F degree either,probably just a frozen valve

Ed Hackenbruch · January 12, 2015, 09:46:40 AM

JC, could be the governor on the compressor.....about $20 for a new one.

lostagain · January 12, 2015, 10:15:47 AM

Removed ping tank. Solid ice in it. Compressor is fine. Still slow airing up. Must be ice in line to dryer. That is from shop air 3 days ago while fixing brake chamber. Taking it to neighbour's warm shop to thaw, and visit.

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lvmci · January 12, 2015, 10:40:24 AM

Hi JC, you must have popsicle toes too! Tom, lvmci...

Stormcloud · January 12, 2015, 11:19:58 AM

I had a similar experience a few years back. The system froze up after the AD-9 dryer while we were travelling through a bad snowstorm. We got thawed out overnite in a large auto-ag shop in Herried, SD , and I added some alcohol to the system while there. If I recall correctly, I added a bit of alcohol to MY system that nite too!

I replaced the dryer cartridge when we reached our destination, and added an alcohol sniffer kit after the dryer
( kind of like belt AND suspenders ).

No problems whatsoever since then.

Good luck, JC!

Mark

lostagain · January 12, 2015, 07:53:11 PM

All fixed ! Had the bus in warm shop for 3 hours or so. Then disconnected supply line at dryer, and blew shop air from Schrader valve at ping tank. Got 4 or 6 ounces of water and a couple
of ice chunks out of it.

Note to self, and other bus nuts: drain all tanks after putting shop air in bus system, and before taking bus out in cold weather.

Headed out in morning toward Quartzsite.

JC

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Dave5Cs · January 13, 2015, 04:57:20 AM

We always carry a bottle of Heet with us just in case. JC we are leaving in 2 hours see yas there. We are stopping overnight somewhere. Decided to go in on I210, I 10.

Dave and Doreen Walker

Ed Hackenbruch · January 13, 2015, 05:12:10 AM

Hmmmmm.......i hope we don't ice up on our way up to Quartzsite tomorrow!

TomC · January 13, 2015, 08:33:48 AM

Just isn't worth running in sub freezing weather. Too many things to go wrong.

bobofthenorth · January 13, 2015, 10:06:25 AM

Quote from: TomC on January 13, 2015, 08:33:48 AM
Just isn't worth running in sub freezing weather. Too many things to go wrong.

Sez the guy from SoCal.

I've seen frost in August and in May. Refusing to run in sub freezing weather would seriously restrict our mobility.

Dave5Cs · January 13, 2015, 07:13:29 PM

That was a joke. We are in Borin CA at pilot. Left Sac at 9am and made it here at 7pm. 28mph up the tahachapies.blinking all the way.
9 hours plus stopped in Bakersberg for lunch